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Pleonast
Pleonast

Achroite
Achroite



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Pleonast
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Achroite

Pleonast and Achroite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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-
-
-9999
-
Perfect
-9999
MgAl2O4
 
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-
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2.90-3.40
Uneven, ConchoidalWalter Schumann
Indiscernible
7-7.5
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Pleonast and Achroite Chemical Formula

While comparing Pleonast and Achroite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Pleonast and Achroite chemical formula.

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Pleonast and Achroite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pleonast and Achroite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pleonast Vs Achroite during the identification of gemstone. Specific gravity of Pleonast is whereas that of Achroite is .